Estimation of lobby traffic and traffic rate using fuzzy logic to control elevator dispatching for single source traffic

A system for controlling elevator cars in a building having a plurality of floors, said system comprising a group controller for controlling operation of the elevator cars during single source traffic conditions, said group controller providing crisp estimates of lobby traffic and traffic rate in response to car loads of elevator cars leaving a lobby and a departure interval between successive cars leaving the lobby, wherein said group controller selects a number of cars assigned to the lobby in response to the estimate of lobby traffic and the estimate of traffic rate from a look-up table generated from simulation results using collected traffic data and selected values of the number of cars assigned to the lobby corresponding to said crisp estimates of lobby traffic and traffic rate.

A system for controlling elevator cars in a building having a plurality of floors, said system comprising a group controller for controlling operation of the elevator cars during single source traffic conditions, said group controller providing crisp estimates of lobby traffic and traffic rate in response to car loads of elevator cars leaving a lobby and a departure interval between successive cars leaving the lobby, wherein said group controller selects a service mode in response to said crisp estimates of lobby traffic and traffic rate from a look-up table generated from simulation results using collected traffic data and selected values of the number of cars assigned to the lobby corresponding to said crisp estimates of lobby traffic and traffic rate.

A system for controlling elevator cars in a building having a plurality of floors, said system comprising a group controller for controlling operation of the elevator cars during single source traffic conditions, said group controller providing crisp estimates of lobby traffic and traffic rate in response to car loads of elevator cars leaving a lobby and a departure interval between successive cars leaving the lobby, wherein said group controller selects a schedule interval in response to said crisp estimates of lobby traffic and traffic rate from a look-up table generated from simulation results using collected traffic data and selected values of the number of cars assigned to the lobby corresponding to said crisp estimates of lobby traffic and traffic rate.

A system for controlling elevator cars in a building having a plurality of floors, said system comprising a group controller for controlling operation of the elevator cars during single source traffic conditions, said group controller providing crisp estimates of lobby traffic and traffic rate in response to car loads of elevator cars leaving a lobby and a departure interval between successive cars leaving the lobby, wherein said group controller selects schedule window tolerances in response to said crisp estimates of lobby traffic and traffic rate from a look-up table generated from simulation results using collected traffic data and selected values of the number of cars assigned to the lobby corresponding to said crisp estimates of lobby traffic and traffic rate.

A system for controlling elevator cars n a building having a plurality of floors, said system comprising a group controller for controlling operation of the elevator cars during single source traffic conditions, said group controller providing crisp estimates of lobby traffic and traffic rate in response to car loads of elevator cars leaving a lobby and a departure interval between successive cars leaving the lobby, wherein said group controller records said crisp estimates of lobby traffic and traffic rate, said group controller records collected traffic data for a determined period, and wherein said system performs simulation runs based on said recorded crisp estimates and said collected traffic data for selecting values for control parameters of said system.